COMM FAIL — Communications Failure Alert

What does COMM FAIL mean?

Communication between the scrolling marquee and the Main Base Board (MBB) has been lost. If the communication loss is internal to the MBB, the unit will shut down or not start. The alert resets automatically once communications are re-established.

• Loss of communication between marquee and MBB
• Internal MBB communication fault
• Wiring issue between components

Click steps to track your progress.

1. 1

   Check wiring connections between the scrolling marquee and the MBB.

2. 2

   Ensure both the marquee and MBB are powered on.

3. 3

   If communication is internal to the MBB, further diagnostics are needed.

4. 4

   The alert should reset automatically once communication is restored.